public void When_DeriveNode_Expect_Reference(Node function, Dictionary <VariableNode, Node> expected)
{
var nf = new NodeFinder();
var d = new Derivatives()
{
Variables = new HashSet <VariableNode>(nf.Build(function))
};
var actual = d.Derive(function);
CompareDictionary(expected, actual);
}
/// <summary>
/// Creates the derivatives for the specified function.
/// </summary>
/// <param name="function">The function.</param>
/// <returns>The derivatives with respect to all variables.</returns>
public Dictionary <VariableNode, Node> CreateDerivatives(Node function)
{
var state = GetState <IBiasingSimulationState>();
var bp = GetParameterSet <Parameters>();
var comparer = new VariableNodeComparer(state.Comparer, Simulation.EntityBehaviors.Comparer, bp.VariableComparer);
// Derive the function
var derivatives = new Derivatives()
{
Variables = new HashSet <VariableNode>(comparer)
};
var nf = new NodeFinder();
foreach (var variable in nf.Build(function).Where(v => v.NodeType == NodeTypes.Voltage || v.NodeType == NodeTypes.Current))
{
if (derivatives.Variables.Contains(variable))
{
continue;
}
derivatives.Variables.Add(variable);
}
return(derivatives.Derive(function) ?? new Dictionary <VariableNode, Node>(comparer));
}
